Pillow



FIG. 1 is a front and side perspective view of a pillow showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right side elevational view thereof; and

FIG. 5 is a rear elevational view thereof. 

The ornamental design for a pillow, as shown and described. 